Fire-box lining



(No moal. I

E. E. BUNKER.

FIRE BOX LINING'.

f v v No. 274,169. r Patentfed Mar.20,188-3.

n, PETERS. Photauihngnphlr. Waahinm n. a

U ITED STATES PATENT Farce.

EDGAR n. BUNKER, or DUBUQUE, iowA.

FIRE-BOX LINING.

SPECIFICATION forming part of Letters Patent No. 274,169, dated March 20, 1883.

Application filed July 19, 1882. (No model.)

To all whom it mag concern.

Be it known that I, EDGAR E. BUNKER, of Dubuque, in the county of Dubuque and State of Iowa, have invented a new and useful Improvement in Fire-Box Linings; and I do hereby declare that the following is a full and exact description of the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

The object of the invention involved in the subject-m atter of this application is to produce asimple adjustablefire-boxliningforfire-boxes, which can readily be vertically and longitudinally adjusted for its application to cookingstoves having fire-boxes of different heights and lengths without the aid of the commonlyused bolts and slots and lugs or keys, &c.; and the invention therein consists in providing the fire-box lining proper and each of the adjustable and removable wings thereof with a series of grooves or corrugations and correspondingly-shaped ridges suitably arranged to engage with each other, and thereby render the fire-box lining capable of adjustment to any requiredheight and length and it further consists in the construction, arrangement, and combination of the parts composing it, as will be fully hereinafter set forth, and pointed out in the claims.

In order that a thorough understanding may be had of the invention, and to enable those skilled in its relative art to know how to construct and properly adjust and apply the same, I will proceed to describe it with reference .to the accompanying drawings, in which- Figure l is a plan view of the rear sideof a fire-box lining constructed in accordance with my invention; Fig. 2, a. similar view of the body of the'fire-box lining and under side of the adjustable lower wing detached therefrom; Fig. 3, a view in detail of one of the adjustable side or end wings, and Fig. 4 is a section of I the body taken on the line 00 as of Fig. 2.

depression, B, having near each end thereof an upward extension, B, terminating near the base of the curved upper edge, and in each of which extensions, near its point of connection with the portion B, is located a ridge, 1). of a shape and size corresponding with grooves or corrugations cut in an arm on each end of an adjustable wing, 0, now to be described. The depression B, with its extensions B, above described, is made of a sufificient width and depth to receive a correspondingly shaped wing, 0, adapted to be adjustably attached to the lower edge of the fire-box lining, and is, as shown in Fig. 2, provided near each end with an arm, 0, extending upwardly therefrom,and provided on its under surface with a series of V-shaped grooves or corrugations, c, any one of which is adapted to fit nicely over the ridge b in the depression on the body of the fire-box lining, and thereby enable the said wing to be vertically adjusted and attached thereto, accordingly as required.

On the rear side of the body A, and at each end of the series of grooves or corrugations a, is cast a hook, D, under which the arms of the.

adjustable side or end wings (presently to be described) are placed and held against the body of the fire-box lining. Directly under each of these books D a rectangular opening, d, is cut entirely through the firebox lining, for the purpose of avoiding cores in casting, and inasmuch as they are completely covered by the arms of the end wings when applied to the fire-box lining, they afford no entrance whatever for ashes into the air-ch amber.

E E represent the adjustable side or end wings, of a width corresponding with that of the body of the fire-box lining, (when extended to its greatest possible limit,) and capable of being accordinglylessenedin width by means of breaking-grooves 6, arranged upon the under surface of each near its lower edge, as shown in Fig. 3. Each of these wings is provided, as shown, with an arm, F, cast therewith, and extending outwardly from itscenter atright anseen that the entire fire-box lining is of a sim- 2 7 erases (under which the arms pass, as before men- I tioned) the said wings can be lengthwise adjusted, as desired, and held in thevposition given them.

It will be obvious that instead of attaching the wing G to the lower edge of the body of the fire-box lining, it could be equally as well adapted for attachment to the upper edge thereof by merely reversing the location of the depression B, and accordingly changing that of the ridge b in the'extensions B of said depression. Ifit be desired to make this change, the rearwardly-curved upper edge of the body of the fire-box lining would necessarily have to be removed and made to form a part of and hold a like position on the wing (J.

It will further be apparent that instead of casting each of the side or end wingsin one piece, with breaking-grooves on the loweredge, they could be composed each of two sections, and adapted by grooves or corrugations and ridges to fit nicely together, and-be of a shape like that shown in Fig. 3, and capable of ad justment in width to correspond with that of the body ofthefire-box lining. Although this form of construction will answer all practical purposes, it will be found objectionable, from the fact that the two sections com posing the wing are required to be of too light a weight to cast well, and the other form will therefore prove the more efficient in practice.

The corrugations and ridges, instead of being located on their respective parts, as herein described, may be correspondinglyreversed without producing any change in the manner of adjusting and attaching such parts to the fire-box lining.

It will be understood that the adjustable lower wing, O, is only provided in order to supply the trade with backs capable of fitting the few deep fire-boxes in use, while for boxes of the ordinary sizes of stoves its employment can conveniently be dbne away with and the firebox lining proper cast plain and thin, with breaking-grooves on its lower edge, and of a width sufiicient to be accommodated in the largest of the ordinary-sized fire-boxes.

From the foregoing description it will be ple and cheap construction, each of itscomponent parts bein gcastseparate from the other,

complete in itself, and adapted to be adjusted and secured together and applied to fit fireboXes of various depths and lengths without the aid of bolts or other similar locking devices usually employed.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. Afire-box lining having its body provided at its center with a series of transversely-arranged V-shaped corrugations adapted to receive a.correspondingly-shaped ridge on the arm of each of its adjustable end wings, substantially as and for the purpose set forth.

2. The combination, with a fire-box lining having its body provided at its center with a series of \l-shaped corrugations, of the hooks D l), substantially as described and shown, for

holding the adjustable side or end wings of such lining in proper position upon its body, as set forth.

3. In a fire-boxlining, the body A, provided with the V-shaped corrugations a, hooksD D. and openings (Z 61, substantially as described and shown.

4. In a fire-box lining, the body A, provided with the depression B, its extensions B B, and the V-shaped ridges b, substantially as de scribed.

5. In a fire-box lining, the adjustable and removable wings E, having the arms F, provided with the V-sha ped ridges f, su bstantially EDGAR E. BUNKER.

.VVitnesses:

WILLIAM GRAHAM, Mormon M. CADY. 

